We use our teeth every time we eat. Teeth enable us to break up food into small pieces so that our bodies can digest it. A tooth has three main parts – the crown, which shows above the gum; the neck, which shows at gum level; and the root, which is hidden in the jawbone. A tooth has three layers – creamy white enamel, dentine beneath and the pulp cavity in the center. The pulp contains many nerves. Chisel-like incisors at the front of the mouth cut and slice food; canines tear and rip food; and premolars and molars crush and grind it. We have two sets of teeth. Children have 20 milk teeth that gradually fall out and are replaced by permanent adult teeth. Adults have 32 teeth in total. Wisdom teeth grow when a person is about 20.
We should take care of our teeth, brush them twice a day.